content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
   * Other names may be trademarks of their respective owners.]
   *
   * ------------------
   * DateAxisTests.java
   * ------------------
   * (C) Copyright 2003-2012, by Object Refinery Limited and Contributors.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * Changes
   * -------
   * 22-Apr-2003 : Version 1 (DG);
   * 07-Jan-2005 : Added test for hashCode() method (DG);
   * 25-Sep-2005 : New tests for bug 1564977 (DG);
   * 19-Apr-2007 : Added further checks for setMinimumDate() and
   *               setMaximumDate() (DG);
   * 03-May-2007 : Replaced the tests for the previousStandardDate() method with
   *               new tests that check that the previousStandardDate and the
   *               next standard date do in fact span the reference date (DG);
   * 25-Nov-2008 : Added testBug2201869 (DG);
   * 08-Feb-2012 : Added testBug3484403 (MH);
   * 17-Jun-2012 : Removed JCommon dependencies (DG);
   *
   */
  
  package org.jfree.chart.axis;
  
  import org.jfree.chart.ui.RectangleEdge;
  import org.jfree.data.time.DateRange;
  import org.jfree.data.time.Day;
  import org.jfree.data.time.Hour;
  import org.jfree.data.time.Millisecond;
  import org.jfree.data.time.Month;
  import org.jfree.data.time.Second;
  import org.jfree.data.time.Year;
  import org.junit.Test;
  
  import java.awt.Graphics2D;
  import java.awt.geom.Rectangle2D;
  import java.awt.image.BufferedImage;
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.ObjectInput;
  import java.io.ObjectInputStream;
  import java.io.ObjectOutput;
  import java.io.ObjectOutputStream;
  import java.text.SimpleDateFormat;
  import java.util.Calendar;
  import java.util.Date;
  import java.util.GregorianCalendar;
  import java.util.List;
  import java.util.Locale;
  import java.util.TimeZone;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertNotSame;
  import static org.junit.Assert.assertSame;
  import static org.junit.Assert.assertTrue;
  
  /**
   * Tests for the {@link DateAxis} class.
   */
  public class DateAxisTest  {
  
      static class MyDateAxis extends DateAxis {
  
          /**
           * Creates a new instance.
           *
           * @param label  the label.
           */
          public MyDateAxis(String label) {
              super(label);
          }
  
  
          @Override
          public Date previousStandardDate(Date d, DateTickUnit unit) {
              return super.previousStandardDate(d, unit);
          }
      }
  
  
  
  
  
      /**
       * Confirm that the equals method can distinguish all the required fields.
       */
      @Test
      public void testEquals() {
  
          DateAxis a1 = new DateAxis("Test");
          DateAxis a2 = new DateAxis("Test");
          assertEquals(a1, a2);
          assertFalse(a1.equals(null));
          assertFalse(a1.equals("Some non-DateAxis object"));
  
          // tickUnit
          a1.setTickUnit(new DateTickUnit(DateTickUnitType.DAY, 7));
          assertFalse(a1.equals(a2));
          a2.setTickUnit(new DateTickUnit(DateTickUnitType.DAY, 7));
          assertEquals(a1, a2);
  
          // dateFormatOverride
          a1.setDateFormatOverride(new SimpleDateFormat("yyyy"));
          assertFalse(a1.equals(a2));
          a2.setDateFormatOverride(new SimpleDateFormat("yyyy"));
          assertEquals(a1, a2);
  
          // tickMarkPosition
          a1.setTickMarkPosition(DateTickMarkPosition.END);
          assertFalse(a1.equals(a2));
          a2.setTickMarkPosition(DateTickMarkPosition.END);
          assertEquals(a1, a2);
  
      }
  
      /**
       * A test for bug report 1472942.  The DateFormat.equals() method is not
       * checking the range attribute.
       */
      @Test
      public void test1472942() {
          DateAxis a1 = new DateAxis("Test");
          DateAxis a2 = new DateAxis("Test");
          assertEquals(a1, a2);
  
          // range
          a1.setRange(new Date(1L), new Date(2L));
          assertFalse(a1.equals(a2));
          a2.setRange(new Date(1L), new Date(2L));
          assertEquals(a1, a2);
      }
  
      /**
       * Two objects that are equal are required to return the same hashCode.
       */
      @Test
      public void testHashCode() {
          DateAxis a1 = new DateAxis("Test");
          DateAxis a2 = new DateAxis("Test");
          assertEquals(a1, a2);
          int h1 = a1.hashCode();
          int h2 = a2.hashCode();
          assertEquals(h1, h2);
      }
  
      /**
       * Confirm that cloning works.
       */
      @Test
      public void testCloning() throws CloneNotSupportedException {
          DateAxis a1 = new DateAxis("Test");
          DateAxis a2 = (DateAxis) a1.clone();
          assertNotSame(a1, a2);
          assertSame(a1.getClass(), a2.getClass());
          assertEquals(a1, a2);
      }
  
      /**
       * Test that the setRange() method works.
       */
      @Test
      public void testSetRange() {
  
          DateAxis axis = new DateAxis("Test Axis");
          Calendar calendar = Calendar.getInstance();
          calendar.set(1999, Calendar.JANUARY, 3);
          Date d1 = calendar.getTime();
          calendar.set(1999, Calendar.JANUARY, 31);
          Date d2 = calendar.getTime();
          axis.setRange(d1, d2);
  
          DateRange range = (DateRange) axis.getRange();
          assertEquals(d1, range.getLowerDate());
          assertEquals(d2, range.getUpperDate());
  
      }
  
      /**
       * Test that the setMaximumDate() method works.
       */
      @Test
      public void testSetMaximumDate() {
          DateAxis axis = new DateAxis("Test Axis");
          Date date = new Date();
          axis.setMaximumDate(date);
          assertEquals(date, axis.getMaximumDate());
  
          // check that setting the max date to something on or before the
          // current min date works...
          Date d1 = new Date();
          Date d2 = new Date(d1.getTime() + 1);
          Date d0 = new Date(d1.getTime() - 1);
          axis.setMaximumDate(d2);
          axis.setMinimumDate(d1);
          axis.setMaximumDate(d1);
          assertEquals(d0, axis.getMinimumDate());
      }
  
      /**
       * Test that the setMinimumDate() method works.
       */
      @Test
      public void testSetMinimumDate() {
          DateAxis axis = new DateAxis("Test Axis");
          Date d1 = new Date();
          Date d2 = new Date(d1.getTime() + 1);
          axis.setMaximumDate(d2);
          axis.setMinimumDate(d1);
          assertEquals(d1, axis.getMinimumDate());
  
          // check that setting the min date to something on or after the
          // current min date works...
          Date d3 = new Date(d2.getTime() + 1);
          axis.setMinimumDate(d2);
          assertEquals(d3, axis.getMaximumDate());
      }
  
      /**
       * Tests two doubles for 'near enough' equality.
       *
       * @param d1  number 1.
       * @param d2  number 2.
       * @param tolerance  maximum tolerance.
       *
       * @return A boolean.
       */
      private boolean same(double d1, double d2, double tolerance) {
          return (Math.abs(d1 - d2) < tolerance);
      }
  
      /**
       * Test the translation of Java2D values to data values.
       */
      @Test
      public void testJava2DToValue() {
          DateAxis axis = new DateAxis();
          axis.setRange(50.0, 100.0);
          Rectangle2D dataArea = new Rectangle2D.Double(10.0, 50.0, 400.0, 300.0);
          double y1 = axis.java2DToValue(75.0, dataArea, RectangleEdge.LEFT);
          assertTrue(same(y1, 95.8333333, 1.0));
          double y2 = axis.java2DToValue(75.0, dataArea, RectangleEdge.RIGHT);
          assertTrue(same(y2, 95.8333333, 1.0));
          double x1 = axis.java2DToValue(75.0, dataArea, RectangleEdge.TOP);
          assertTrue(same(x1, 58.125, 1.0));
          double x2 = axis.java2DToValue(75.0, dataArea, RectangleEdge.BOTTOM);
          assertTrue(same(x2, 58.125, 1.0));
          axis.setInverted(true);
          double y3 = axis.java2DToValue(75.0, dataArea, RectangleEdge.LEFT);
          assertTrue(same(y3, 54.1666667, 1.0));
          double y4 = axis.java2DToValue(75.0, dataArea, RectangleEdge.RIGHT);
          assertTrue(same(y4, 54.1666667, 1.0));
          double x3 = axis.java2DToValue(75.0, dataArea, RectangleEdge.TOP);
          assertTrue(same(x3, 91.875, 1.0));
          double x4 = axis.java2DToValue(75.0, dataArea, RectangleEdge.BOTTOM);
          assertTrue(same(x4, 91.875, 1.0));
      }
  
      /**
       * Serialize an instance, restore it, and check for equality.
       */
      @Test
      public void testSerialization() throws IOException, ClassNotFoundException {
  
          DateAxis a1 = new DateAxis("Test Axis");
  
              ByteArrayOutputStream buffer = new ByteArrayOutputStream();
              ObjectOutput out = new ObjectOutputStream(buffer);
              out.writeObject(a1);
              out.close();
  
              ObjectInput in = new ObjectInputStream(
                      new ByteArrayInputStream(buffer.toByteArray()));
              DateAxis a2 = (DateAxis) in.readObject();
              in.close();
          boolean b = a1.equals(a2);
          assertTrue(b);
  
      }
  
      /**
       * A basic check for the testPreviousStandardDate() method when the
       * tick unit is 1 year.
       */
      @Test
      public void testPreviousStandardDateYearA() {
          TimeZone tz = TimeZone.getDefault();
          MyDateAxis axis = new MyDateAxis("Year");
          Year y2006 = new Year(2006);
          Year y2007 = new Year(2007);
  
          // five dates to check...
          Date d0 = new Date(y2006.getFirstMillisecond());
          Date d1 = new Date(y2006.getFirstMillisecond() + 500L);
          Date d2 = new Date(y2006.getMiddleMillisecond());
          Date d3 = new Date(y2006.getMiddleMillisecond() + 500L);
          Date d4 = new Date(y2006.getLastMillisecond());
  
          Date end = new Date(y2007.getLastMillisecond());
  
          DateTickUnit unit = new DateTickUnit(DateTickUnitType.YEAR, 1);
          axis.setTickUnit(unit);
  
          // START: check d0 and d1
          axis.setTickMarkPosition(DateTickMarkPosition.START);
  
          axis.setRange(d0, end);
          Date psd = axis.previousStandardDate(d0, unit);
          Date nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          // MIDDLE: check d1, d2 and d3
          axis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          axis.setRange(d2, end);
          psd = axis.previousStandardDate(d2, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d2.getTime());
          assertTrue(nsd.getTime() >= d2.getTime());
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          // END: check d3 and d4
          axis.setTickMarkPosition(DateTickMarkPosition.END);
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          axis.setRange(d4, end);
          psd = axis.previousStandardDate(d4, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d4.getTime());
          assertTrue(nsd.getTime() >= d4.getTime());
      }
  
      /**
       * A basic check for the testPreviousStandardDate() method when the
       * tick unit is 10 years (just for the sake of having a multiple).
       */
      @Test
      public void testPreviousStandardDateYearB() {
          TimeZone tz = TimeZone.getDefault();
          MyDateAxis axis = new MyDateAxis("Year");
          Year y2006 = new Year(2006);
          Year y2007 = new Year(2007);
  
          // five dates to check...
          Date d0 = new Date(y2006.getFirstMillisecond());
          Date d1 = new Date(y2006.getFirstMillisecond() + 500L);
          Date d2 = new Date(y2006.getMiddleMillisecond());
          Date d3 = new Date(y2006.getMiddleMillisecond() + 500L);
          Date d4 = new Date(y2006.getLastMillisecond());
  
          Date end = new Date(y2007.getLastMillisecond());
  
          DateTickUnit unit = new DateTickUnit(DateTickUnitType.YEAR, 10);
          axis.setTickUnit(unit);
  
          // START: check d0 and d1
          axis.setTickMarkPosition(DateTickMarkPosition.START);
  
          axis.setRange(d0, end);
          Date psd = axis.previousStandardDate(d0, unit);
          Date nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          // MIDDLE: check d1, d2 and d3
          axis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          axis.setRange(d2, end);
          psd = axis.previousStandardDate(d2, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d2.getTime());
          assertTrue(nsd.getTime() >= d2.getTime());
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          // END: check d3 and d4
          axis.setTickMarkPosition(DateTickMarkPosition.END);
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          axis.setRange(d4, end);
          psd = axis.previousStandardDate(d4, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d4.getTime());
          assertTrue(nsd.getTime() >= d4.getTime());
      }
  
      /**
       * A basic check for the testPreviousStandardDate() method when the
       * tick unit is 1 month.
       */
      @Test
      public void testPreviousStandardDateMonthA() {
          TimeZone tz = TimeZone.getDefault();
          MyDateAxis axis = new MyDateAxis("Month");
          Month nov2006 = new Month(11, 2006);
          Month dec2006 = new Month(12, 2006);
  
          // five dates to check...
          Date d0 = new Date(nov2006.getFirstMillisecond());
          Date d1 = new Date(nov2006.getFirstMillisecond() + 500L);
          Date d2 = new Date(nov2006.getMiddleMillisecond());
          Date d3 = new Date(nov2006.getMiddleMillisecond() + 500L);
          Date d4 = new Date(nov2006.getLastMillisecond());
  
          Date end = new Date(dec2006.getLastMillisecond());
  
          DateTickUnit unit = new DateTickUnit(DateTickUnitType.MONTH, 1);
          axis.setTickUnit(unit);
  
          // START: check d0 and d1
          axis.setTickMarkPosition(DateTickMarkPosition.START);
  
          axis.setRange(d0, end);
          Date psd = axis.previousStandardDate(d0, unit);
          Date nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          // MIDDLE: check d1, d2 and d3
          axis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          axis.setRange(d2, end);
          psd = axis.previousStandardDate(d2, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d2.getTime());
          assertTrue(nsd.getTime() >= d2.getTime());
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          // END: check d3 and d4
          axis.setTickMarkPosition(DateTickMarkPosition.END);
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          axis.setRange(d4, end);
          psd = axis.previousStandardDate(d4, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d4.getTime());
          assertTrue(nsd.getTime() >= d4.getTime());
      }
  
      /**
       * A basic check for the testPreviousStandardDate() method when the
       * tick unit is 3 months (just for the sake of having a multiple).
       */
      @Test
      public void testPreviousStandardDateMonthB() {
          TimeZone tz = TimeZone.getDefault();
          MyDateAxis axis = new MyDateAxis("Month");
          Month nov2006 = new Month(11, 2006);
          Month dec2006 = new Month(12, 2006);
  
          // five dates to check...
          Date d0 = new Date(nov2006.getFirstMillisecond());
          Date d1 = new Date(nov2006.getFirstMillisecond() + 500L);
          Date d2 = new Date(nov2006.getMiddleMillisecond());
          Date d3 = new Date(nov2006.getMiddleMillisecond() + 500L);
          Date d4 = new Date(nov2006.getLastMillisecond());
  
          Date end = new Date(dec2006.getLastMillisecond());
  
          DateTickUnit unit = new DateTickUnit(DateTickUnitType.MONTH, 3);
          axis.setTickUnit(unit);
  
          // START: check d0 and d1
          axis.setTickMarkPosition(DateTickMarkPosition.START);
  
          axis.setRange(d0, end);
          Date psd = axis.previousStandardDate(d0, unit);
          Date nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          // MIDDLE: check d1, d2 and d3
          axis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          axis.setRange(d2, end);
          psd = axis.previousStandardDate(d2, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d2.getTime());
          assertTrue(nsd.getTime() >= d2.getTime());
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          // END: check d3 and d4
          axis.setTickMarkPosition(DateTickMarkPosition.END);
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          axis.setRange(d4, end);
          psd = axis.previousStandardDate(d4, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d4.getTime());
          assertTrue(nsd.getTime() >= d4.getTime());
      }
  
      /**
       * A basic check for the testPreviousStandardDate() method when the
       * tick unit is 1 day.
       */
      @Test
      public void testPreviousStandardDateDayA() {
          TimeZone tz = TimeZone.getDefault();
          MyDateAxis axis = new MyDateAxis("Day");
          Day apr12007 = new Day(1, 4, 2007);
          Day apr22007 = new Day(2, 4, 2007);
  
          // five dates to check...
          Date d0 = new Date(apr12007.getFirstMillisecond());
          Date d1 = new Date(apr12007.getFirstMillisecond() + 500L);
          Date d2 = new Date(apr12007.getMiddleMillisecond());
          Date d3 = new Date(apr12007.getMiddleMillisecond() + 500L);
          Date d4 = new Date(apr12007.getLastMillisecond());
  
          Date end = new Date(apr22007.getLastMillisecond());
  
          DateTickUnit unit = new DateTickUnit(DateTickUnitType.DAY, 1);
          axis.setTickUnit(unit);
  
          // START: check d0 and d1
          axis.setTickMarkPosition(DateTickMarkPosition.START);
  
          axis.setRange(d0, end);
          Date psd = axis.previousStandardDate(d0, unit);
          Date nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          // MIDDLE: check d1, d2 and d3
          axis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          axis.setRange(d2, end);
          psd = axis.previousStandardDate(d2, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d2.getTime());
          assertTrue(nsd.getTime() >= d2.getTime());
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          // END: check d3 and d4
          axis.setTickMarkPosition(DateTickMarkPosition.END);
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          axis.setRange(d4, end);
          psd = axis.previousStandardDate(d4, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d4.getTime());
          assertTrue(nsd.getTime() >= d4.getTime());
      }
  
      /**
       * A basic check for the testPreviousStandardDate() method when the
       * tick unit is 7 days (just for the sake of having a multiple).
       */
      @Test
      public void testPreviousStandardDateDayB() {
          TimeZone tz = TimeZone.getDefault();
          MyDateAxis axis = new MyDateAxis("Day");
          Day apr12007 = new Day(1, 4, 2007);
          Day apr22007 = new Day(2, 4, 2007);
  
          // five dates to check...
          Date d0 = new Date(apr12007.getFirstMillisecond());
          Date d1 = new Date(apr12007.getFirstMillisecond() + 500L);
          Date d2 = new Date(apr12007.getMiddleMillisecond());
          Date d3 = new Date(apr12007.getMiddleMillisecond() + 500L);
          Date d4 = new Date(apr12007.getLastMillisecond());
  
          Date end = new Date(apr22007.getLastMillisecond());
  
          DateTickUnit unit = new DateTickUnit(DateTickUnitType.DAY, 7);
          axis.setTickUnit(unit);
  
          // START: check d0 and d1
          axis.setTickMarkPosition(DateTickMarkPosition.START);
  
          axis.setRange(d0, end);
          Date psd = axis.previousStandardDate(d0, unit);
          Date nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          // MIDDLE: check d1, d2 and d3
          axis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          axis.setRange(d2, end);
          psd = axis.previousStandardDate(d2, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d2.getTime());
          assertTrue(nsd.getTime() >= d2.getTime());
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          // END: check d3 and d4
          axis.setTickMarkPosition(DateTickMarkPosition.END);
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          axis.setRange(d4, end);
          psd = axis.previousStandardDate(d4, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d4.getTime());
          assertTrue(nsd.getTime() >= d4.getTime());
      }
  
      /**
       * A basic check for the testPreviousStandardDate() method when the
       * tick unit is 1 hour.
       */
      @Test
      public void testPreviousStandardDateHourA() {
          TimeZone tz = TimeZone.getDefault();
          MyDateAxis axis = new MyDateAxis("Hour");
          Hour h0 = new Hour(12, 1, 4, 2007);
          Hour h1 = new Hour(13, 1, 4, 2007);
  
          // five dates to check...
          Date d0 = new Date(h0.getFirstMillisecond());
          Date d1 = new Date(h0.getFirstMillisecond() + 500L);
          Date d2 = new Date(h0.getMiddleMillisecond());
          Date d3 = new Date(h0.getMiddleMillisecond() + 500L);
          Date d4 = new Date(h0.getLastMillisecond());
  
          Date end = new Date(h1.getLastMillisecond());
  
          DateTickUnit unit = new DateTickUnit(DateTickUnitType.HOUR, 1);
          axis.setTickUnit(unit);
  
          // START: check d0 and d1
          axis.setTickMarkPosition(DateTickMarkPosition.START);
  
          axis.setRange(d0, end);
          Date psd = axis.previousStandardDate(d0, unit);
          Date nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          // MIDDLE: check d1, d2 and d3
          axis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          axis.setRange(d2, end);
          psd = axis.previousStandardDate(d2, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d2.getTime());
          assertTrue(nsd.getTime() >= d2.getTime());
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          // END: check d3 and d4
          axis.setTickMarkPosition(DateTickMarkPosition.END);
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          axis.setRange(d4, end);
          psd = axis.previousStandardDate(d4, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d4.getTime());
          assertTrue(nsd.getTime() >= d4.getTime());
      }
  
      /**
       * A basic check for the testPreviousStandardDate() method when the
       * tick unit is 6 hours (just for the sake of having a multiple).
       */
      @Test
      public void testPreviousStandardDateHourB() {
          TimeZone tz = TimeZone.getDefault();
          MyDateAxis axis = new MyDateAxis("Hour");
          Hour h0 = new Hour(12, 1, 4, 2007);
          Hour h1 = new Hour(13, 1, 4, 2007);
  
          // five dates to check...
          Date d0 = new Date(h0.getFirstMillisecond());
          Date d1 = new Date(h0.getFirstMillisecond() + 500L);
          Date d2 = new Date(h0.getMiddleMillisecond());
          Date d3 = new Date(h0.getMiddleMillisecond() + 500L);
          Date d4 = new Date(h0.getLastMillisecond());
  
          Date end = new Date(h1.getLastMillisecond());
  
          DateTickUnit unit = new DateTickUnit(DateTickUnitType.HOUR, 6);
          axis.setTickUnit(unit);
  
          // START: check d0 and d1
          axis.setTickMarkPosition(DateTickMarkPosition.START);
  
          axis.setRange(d0, end);
          Date psd = axis.previousStandardDate(d0, unit);
          Date nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          // MIDDLE: check d1, d2 and d3
          axis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          axis.setRange(d2, end);
          psd = axis.previousStandardDate(d2, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d2.getTime());
          assertTrue(nsd.getTime() >= d2.getTime());
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          // END: check d3 and d4
          axis.setTickMarkPosition(DateTickMarkPosition.END);
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          axis.setRange(d4, end);
          psd = axis.previousStandardDate(d4, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d4.getTime());
          assertTrue(nsd.getTime() >= d4.getTime());
      }
  
      /**
       * A basic check for the testPreviousStandardDate() method when the
       * tick unit is 1 second.
       */
      @Test
      public void testPreviousStandardDateSecondA() {
          TimeZone tz = TimeZone.getDefault();
          MyDateAxis axis = new MyDateAxis("Second");
          Second s0 = new Second(58, 31, 12, 1, 4, 2007);
          Second s1 = new Second(59, 31, 12, 1, 4, 2007);
  
          // five dates to check...
          Date d0 = new Date(s0.getFirstMillisecond());
          Date d1 = new Date(s0.getFirstMillisecond() + 50L);
          Date d2 = new Date(s0.getMiddleMillisecond());
          Date d3 = new Date(s0.getMiddleMillisecond() + 50L);
          Date d4 = new Date(s0.getLastMillisecond());
  
          Date end = new Date(s1.getLastMillisecond());
  
          DateTickUnit unit = new DateTickUnit(DateTickUnitType.SECOND, 1);
          axis.setTickUnit(unit);
  
          // START: check d0 and d1
          axis.setTickMarkPosition(DateTickMarkPosition.START);
  
          axis.setRange(d0, end);
          Date psd = axis.previousStandardDate(d0, unit);
          Date nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          // MIDDLE: check d1, d2 and d3
          axis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          axis.setRange(d2, end);
          psd = axis.previousStandardDate(d2, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d2.getTime());
          assertTrue(nsd.getTime() >= d2.getTime());
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          // END: check d3 and d4
          axis.setTickMarkPosition(DateTickMarkPosition.END);
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          axis.setRange(d4, end);
          psd = axis.previousStandardDate(d4, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d4.getTime());
          assertTrue(nsd.getTime() >= d4.getTime());
      }
  
      /**
       * A basic check for the testPreviousStandardDate() method when the
       * tick unit is 5 seconds (just for the sake of having a multiple).
       */
      @Test
      public void testPreviousStandardDateSecondB() {
          TimeZone tz = TimeZone.getDefault();
          MyDateAxis axis = new MyDateAxis("Second");
          Second s0 = new Second(58, 31, 12, 1, 4, 2007);
          Second s1 = new Second(59, 31, 12, 1, 4, 2007);
  
          // five dates to check...
          Date d0 = new Date(s0.getFirstMillisecond());
          Date d1 = new Date(s0.getFirstMillisecond() + 50L);
          Date d2 = new Date(s0.getMiddleMillisecond());
          Date d3 = new Date(s0.getMiddleMillisecond() + 50L);
          Date d4 = new Date(s0.getLastMillisecond());
  
          Date end = new Date(s1.getLastMillisecond());
  
          DateTickUnit unit = new DateTickUnit(DateTickUnitType.SECOND, 5);
          axis.setTickUnit(unit);
  
          // START: check d0 and d1
          axis.setTickMarkPosition(DateTickMarkPosition.START);
  
          axis.setRange(d0, end);
          Date psd = axis.previousStandardDate(d0, unit);
          Date nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          // MIDDLE: check d1, d2 and d3
          axis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
  
          axis.setRange(d1, end);
          psd = axis.previousStandardDate(d1, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d1.getTime());
          assertTrue(nsd.getTime() >= d1.getTime());
  
          axis.setRange(d2, end);
          psd = axis.previousStandardDate(d2, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d2.getTime());
          assertTrue(nsd.getTime() >= d2.getTime());
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          // END: check d3 and d4
          axis.setTickMarkPosition(DateTickMarkPosition.END);
  
          axis.setRange(d3, end);
          psd = axis.previousStandardDate(d3, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d3.getTime());
          assertTrue(nsd.getTime() >= d3.getTime());
  
          axis.setRange(d4, end);
          psd = axis.previousStandardDate(d4, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d4.getTime());
          assertTrue(nsd.getTime() >= d4.getTime());
      }
  
      /**
       * A basic check for the testPreviousStandardDate() method when the
       * tick unit is 1 millisecond.
       */
      @Test
      public void testPreviousStandardDateMillisecondA() {
          TimeZone tz = TimeZone.getDefault();
          MyDateAxis axis = new MyDateAxis("Millisecond");
          Millisecond m0 = new Millisecond(458, 58, 31, 12, 1, 4, 2007);
          Millisecond m1 = new Millisecond(459, 58, 31, 12, 1, 4, 2007);
  
          Date d0 = new Date(m0.getFirstMillisecond());
          Date end = new Date(m1.getLastMillisecond());
  
          DateTickUnit unit = new DateTickUnit(DateTickUnitType.MILLISECOND, 1);
          axis.setTickUnit(unit);
  
          // START: check d0
          axis.setTickMarkPosition(DateTickMarkPosition.START);
  
          axis.setRange(d0, end);
          Date psd = axis.previousStandardDate(d0, unit);
          Date nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
  
          // MIDDLE: check d0
          axis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
  
          axis.setRange(d0, end);
          psd = axis.previousStandardDate(d0, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
  
          // END: check d0
          axis.setTickMarkPosition(DateTickMarkPosition.END);
  
          axis.setRange(d0, end);
          psd = axis.previousStandardDate(d0, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
      }
  
      /**
       * A basic check for the testPreviousStandardDate() method when the
       * tick unit is 10 milliseconds (just for the sake of having a multiple).
       */
      @Test
      public void testPreviousStandardDateMillisecondB() {
          TimeZone tz = TimeZone.getDefault();
          MyDateAxis axis = new MyDateAxis("Millisecond");
          Millisecond m0 = new Millisecond(458, 58, 31, 12, 1, 4, 2007);
          Millisecond m1 = new Millisecond(459, 58, 31, 12, 1, 4, 2007);
  
          Date d0 = new Date(m0.getFirstMillisecond());
          Date end = new Date(m1.getLastMillisecond());
  
          DateTickUnit unit = new DateTickUnit(DateTickUnitType.MILLISECOND, 10);
          axis.setTickUnit(unit);
  
          // START: check d0
          axis.setTickMarkPosition(DateTickMarkPosition.START);
  
          axis.setRange(d0, end);
          Date psd = axis.previousStandardDate(d0, unit);
          Date nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
  
          // MIDDLE: check d0
          axis.setTickMarkPosition(DateTickMarkPosition.MIDDLE);
  
          axis.setRange(d0, end);
          psd = axis.previousStandardDate(d0, unit);
          nsd = unit.addToDate(psd, tz);
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
  
          // END: check d0
          axis.setTickMarkPosition(DateTickMarkPosition.END);
  
          axis.setRange(d0, end);
          psd = axis.previousStandardDate(d0, unit);
          nsd = unit.addToDate(psd, TimeZone.getDefault());
          assertTrue(psd.getTime() < d0.getTime());
          assertTrue(nsd.getTime() >= d0.getTime());
      }
  
      /**
       * A test to reproduce bug 2201869.
       */
      @Test
      public void testBug2201869() {
          TimeZone tz = TimeZone.getTimeZone("GMT");
          GregorianCalendar c = new GregorianCalendar(tz, Locale.UK);
          DateAxis axis = new DateAxis("Date", tz, Locale.UK);
          SimpleDateFormat sdf = new SimpleDateFormat("d-MMM-yyyy", Locale.UK);
          sdf.setCalendar(c);
          axis.setTickUnit(new DateTickUnit(DateTickUnitType.MONTH, 1, sdf));
          Day d1 = new Day(1, 3, 2008);
          d1.peg(c);
          Day d2 = new Day(30, 6, 2008);
          d2.peg(c);
          axis.setRange(d1.getStart(), d2.getEnd());
          BufferedImage image = new BufferedImage(200, 100,
                  BufferedImage.TYPE_INT_ARGB);
          Graphics2D g2 = image.createGraphics();
          Rectangle2D area = new Rectangle2D.Double(0.0, 0.0, 200, 100);
          axis.setTickMarkPosition(DateTickMarkPosition.END);
          List ticks = axis.refreshTicks(g2, new AxisState(), area,
                  RectangleEdge.BOTTOM);
          assertEquals(3, ticks.size());
          DateTick t1 = (DateTick) ticks.get(0);
          assertEquals("31-Mar-2008", t1.getText());
          DateTick t2 = (DateTick) ticks.get(1);
          assertEquals("30-Apr-2008", t2.getText());
          DateTick t3 = (DateTick) ticks.get(2);
          assertEquals("31-May-2008", t3.getText());
  
          // now repeat for a vertical axis
          ticks = axis.refreshTicks(g2, new AxisState(), area,
                  RectangleEdge.LEFT);
          assertEquals(3, ticks.size());
          t1 = (DateTick) ticks.get(0);
          assertEquals("31-Mar-2008", t1.getText());
          t2 = (DateTick) ticks.get(1);
          assertEquals("30-Apr-2008", t2.getText());
          t3 = (DateTick) ticks.get(2);
          assertEquals("31-May-2008", t3.getText());
      }
  
  }
  